﻿/************************************************************************

   Extended Silverlight Toolkit

   Copyright (C) 2010-2012 Xceed Software Inc.

   This program is provided to you under the terms of the Microsoft Public
   License (Ms-PL) as published at http://extendedsilverlight.codeplex.com/license

   Please purchase a commercial version of this toolkit if you are using
   it in a commercial product. The commercial versions support the project,
   and also include more features for each control, priority support,
   source code, updates, removed watermark, and a proprietary license.

   Visit http://xceed.com and follow @datagrid on Twitter.

  **********************************************************************/

using System;

namespace Xceed.Silverlight.Data
{
  internal abstract class AsyncEnumerator<T> : DataEnumeratorBase, IAsyncEnumerator<T>, IAsyncEnumerator, IDisposable
  {
    public abstract bool IsFullySynchronized
    {
      get;
    }

    public abstract IAsyncResult BeginCount( CountParameters parameters, AsyncCallback userCallback, object asyncState );

    public abstract CountResult EndCount( IAsyncResult asyncResult );

    public abstract IAsyncResult BeginGroupCount( CountParameters parameters, AsyncCallback userCallback, object asyncState );

    public abstract GroupCountResult EndGroupCount( IAsyncResult asyncResult );

    public abstract IAsyncResult BeginGetStatValues( StatParameters parameters, AsyncCallback userCallback, object asyncState );

    public abstract StatResults EndGetStatValues( IAsyncResult asyncResult );

    public abstract JumpMoveAndFetchAsyncResult BeginJumpMoveAndFetch( JumpMoveAndFetchParameters parameters, AsyncCallback userCallback, object asyncState );

    public abstract JumpMoveAndFetchResult<T> EndJumpMoveAndFetch( JumpMoveAndFetchAsyncResult jumpMoveAndFetchAsyncResult );

    JumpMoveAndFetchResult IAsyncEnumerator.EndJumpMoveAndFetch( JumpMoveAndFetchAsyncResult jumpMoveAndFetchAsyncResult )
    {
      return this.EndJumpMoveAndFetch( jumpMoveAndFetchAsyncResult );
    }
  }
}
